private void gDI3ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (gdi3 == null)
{
gdi3 = new GDI3();
gdi3.MdiParent = this;
gdi3.FormClosed += new FormClosedEventHandler(gdi3_Close);
gdi3.Show();
}
else
{
gdi3.Activate();
}
gdi3.WindowState = FormWindowState.Maximized;
}
private void gdi3_Close(object sender, FormClosedEventArgs e)
{
gdi3 = null;
}